Cita APA (7th ed.)

Ayres, R. (1999). The essence of professional issues in computing. Prentice Hall.

Cita Chicago (17th ed.)

Ayres, Robert. The Essence of Professional Issues in Computing. London: Prentice Hall, 1999.

Cita MLA (9th ed.)

Ayres, Robert. The Essence of Professional Issues in Computing. Prentice Hall, 1999.